Friday Harbor Airport Weather Forecast

    • 40
    • 48

    Becoming Sunny

    • 38
    • 49

    Mostly Sunny

    • 37
    • 48

    Mostly Sunny

    • 37
    • 48

    Mostly Sunny

    • 38
    • 47

    Partly Sunny

    • 38
    • 47

    Mostly Cloudy

    • 39
    • 46

    Mostly Cloudy

Today 15 Jan San Juan County

Partly sunny until late afternoon then becoming sunny. Patchy fog until late afternoon. Highs in the mid 40s to lower 50s. Light wind becoming north around 10 Mph in the afternoon.

Tonight 15 Jan San Juan County

Mostly clear. Patchy dense fog until early morning. Lows near 40. North wind to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Friday Harbor Airport Temperature Statistics

January Temperature

Friday Harbor Airport (0 miles)

  • Lowest 8 January, 2026

    33.1 °F

  • Average January

    44.7 °F

  • Highest 13 January, 2026

    53.1 °F

Climate (2021–Present)

Friday Harbor Airport (0 miles)

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  • Average Low 2021–2026

    44.4 °F

  • Average 2021–2026

    51.8 °F

  • Average High 2021–2026

    59.6 °F
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